 So what that does is that's exactly what it does. It breaks the surface tension. So when the water comes down over the shingle, when it runs, when it drips and clings, it'll come back up. When it hits the metal, that breaks it and stops it, and that guards it from – it's essentially just a cap. It's a funny-shaped looking thing. So it makes the water drip off. It makes it drip off and run back into the gutter or off under the ground, depending on what you have.